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Anthony, GMC Technician
Category: GM
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Experience:  GM Certified
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How do you repair OBD code P1655

Resolved Question:

How do you repair OBD code P1655?
Submitted: 7 years ago.
Category: GM
Expert:  Anthony replied 7 years ago.

Hello! Welcome to justanswer!


That code is for a bad EVAP solenoid. See the diagnostic procedure below. Also in that PDF is the replacement procedure for the solenoid which is most likely what you will need to do.



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Customer: replied 7 years ago.
would a loose gas cap trigger this?
Expert:  Anthony replied 7 years ago.
No this code means that the purge valve's electrical circut is damaged or the valve itself is. Definately not a bad fuel cap.